Word of the Day
Learn a new word every day! The Dictionary.com team of language experts carefully selects each Word of the Day to add some panache to your vocabulary.
the thunderbolt of Indra, the Hindu god of rain and thunder.
Vajra “the thunderbolt of Indra” is a borrowing from Sanskrit vájra- “thunderbolt.” The literal sense of vájra is anything hard or indestructible, which is why the term also means “diamond.” Vájra comes from a root roughly meaning “strong, lively” that also appears in the Latin-origin terms vegetation, vigilant, and vigor. Because Sanskrit v often corresponds to w in English, this same root is visible in English waft, wait, wake, watch, and perhaps even wicked and witch. Vajra was first recorded in English in the 1780s.
to change into or pronounce as one unsegmentable, gliding speech sound, as the oi sound of toy and boil.
Diphthongize “to change into one gliding speech sound” is a verb based on diphthong, a sound that comprises two vowels merged into one. A sound containing one vowel is a monophthong, containing two is a diphthong, and containing three is a triphthong. Diphthong is equivalent to Ancient Greek di- “two” and phthóngos “voice, sound.” The prefix di-, from dís “twice, double,” is a distant relative of English two as well as Latin duo “two” and bis (earlier duis) “twice,” as in dual and bi-, respectively. Phthóngos may come from a long-lost language that was spoken in Greece long before the Greek language swept in; the consonant cluster phth- is rare (yet not impossible) according to the sound laws of the Indo-European language family. Diphthongize was first recorded in English in the late 1860s.
an objectionable or undesirable animal, usually predatory, as a coyote or bobcat.
Varmint “an undesirable animal” is a variant of vermin most common today in Southern and Appalachian English. There are two sound changes at play here: vowel backing and excrescence. Vowel backing is when a vowel sound moves farther back in the mouth, as the front/central vowel e in vermin migrates to become the back vowel a in varmint. A similar shift happened with argal (from ergo) and parson (from person). As we learned from the recent Word of the Day enumerate, excrescence is the addition of a consonant, such as the final t in varmint; compare the evolution of Old English thunor into modern English thunder. Despite its association with dialectal American English, varmint was first recorded in English in the 1530s.
the doctrine that the world tends to become better or may be made better by human effort.
Meliorism “the doctrine that the world becomes better by human effort” is based on the Latin adjective melior “better,” which is also the source of the English verb ameliorate “to make or become better” as well as French meilleur, Italian migliore, Portuguese melhor, and Spanish mejor, all meaning “better” or “best,” depending on context. Just as better and best are the comparative and superlative of good even though good is not related to them, Latin melior and optimus “best” correspond to bonus “good.” This use of unrelated words as forms of one another is known as suppletion, as we learned from the recent Words of the Day laisser-aller and jovial. Meliorism was first recorded in English in the late 1850s.
known or understood by very few; mysterious; secret.
Arcane “known by very few” comes by way of Middle French from Latin arcānus “secret, concealed,” from the verb arcēre “to shut up, keep.” Arcēre (stems arc- and erc-) is also the source of coerce and exercise, and it derives from arca “chest, box,” which is the source of ark. Despite the resemblance, arca is not related to arcus “bow, curve,” the latter of which is the ancestor of arc, arcade, arch, and archer. Thanks to Grimm’s law, Latin c tends to correspond to Old English h, and Latin arcus is therefore a distant relative of arrow (from Old English earh). Arcane was first recorded in English in the 1540s.
